If those names sound familiar, it is because they are the world’s three leading PC manufacturers according to IDC and Gartner data. That market is a monster and growing (27% according to today’s numbers) and until now, Microsoft MSFT has owned the OS on 90+% of them.

In fact, by targeting these three companies, Google GOOG lays claim to more than half of global PC marketshare. That’s not a niche market Google is looking at. That is going after the jugular. Ubiquity.

However, this battle is long from over (or officially beginning, really). Sure there are significant problems with Windows and it is expensive to maintain. But, Google will have to convince the broad swath of PC users that they can operate only from the browser (with some help from Chromoting). Can people trust the Cloud with their photos and documents? Is their Internet connection reliable enough to bet their computing experience on?